SOLUTION: Says Jon to Billy, " I have three times as many marbles as you." Yes, says Billy: "but if u give me 20, I shall have seven times as many as you." How many marbles do each have?"

Algebra ->  Equations -> SOLUTION: Says Jon to Billy, " I have three times as many marbles as you." Yes, says Billy: "but if u give me 20, I shall have seven times as many as you." How many marbles do each have?"      Log On


   



Question 1073484: Says Jon to Billy, " I have three times as many marbles as you." Yes, says Billy: "but if u give me 20, I shall have seven times as many as you." How many marbles do each have?"
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
j, number of marbles Jon has
b, number of marbles Billy has

system%28j=3b%2C%28b%2B20%29%2F%28j-20%29=7%29

system%28b=8%2Cj=24%29